Regular Expressions 101

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/
*^("(\\"|[^"])*"|[^ ]+)
/
matches the character with index 3210 (2016 or 408) literally (case sensitive)
^ asserts position at start of the string
1st Capturing Group
("(\\"|[^"])*"|[^ ]+)
1st Alternative
"(\\"|[^"])*"
" matches the character " with index 3410 (2216 or 428) literally (case sensitive)
2nd Capturing Group
(\\"|[^"])*
* matches the previous token between zero and unlimited times, as many times as possible, giving back as needed (greedy)
A repeated capturing group will only capture the last iteration. Put a capturing group around the repeated group to capture all iterations or use a non-capturing group instead if you're not interested in the data
1st Alternative
\\"
\\ matches the character \ with index 9210 (5C16 or 1348) literally (case sensitive)
" matches the character " with index 3410 (2216 or 428) literally (case sensitive)
2nd Alternative
[^"]
Match a single character not present in the list below
[^"]
" matches the character " with index 3410 (2216 or 428) literally (case sensitive)
" matches the character " with index 3410 (2216 or 428) literally (case sensitive)
2nd Alternative
[^ ]+
Match a single character not present in the list below
[^ ]
+ matches the previous token between one and unlimited times, as many times as possible, giving back as needed (greedy)
matches the character with index 3210 (2016 or 408) literally (case sensitive)
Your regular expression does not match the subject string.Try launching the debugger to find out why.

Regular Expression
No Match

/
/

Test String